Film treating apparatus



Oct. 23, 1934. G. c. BEIDLER FILM TREATING APPARATUS Filed June 7, 1934 2 Sheets-Sheet 1 Oct. 23, 1934. G. c. BEIDLER 1,977,753

A FILM TREATING APPARATUS I Filed June 7, 1934 2 Sheets-Sheet 2 Patented Oct. 23, 1934 ilNiTED "STATES PATENT or ies 9 Claims.

This invention relates to improvements in photographi" apparatus, and more particularly to an improvement on means for subjecting film to the action of fluid for developing it or otherwise treating it after exposure to light.

The invention'is of the general character of that disclosed in my Patent No. 1,346,780 of July 13, 1920, in that it provides means for holding a film in coiled form within a receptacle containing fluid adapted to act on the coated surface of the film, and usually the invention is associated with a developing tank, although it is capable of use in other capacities. The invention will be described with special 1 reference to its use in a developing tank, and an object of the invention is to provide means for holding a film in coiled form in the said tank, the said means being adjustable with respect to the length of the tank in order that films of different widths may be supported for developing. It is a further object of this invention to provide novel means for guiding the films and restraining said films, from edgewise movement longitudinally of the tank, and to providenovel means by which coils or supports for the films are adjusted with relation to each other and the aforesaid guides; novel means being provided, in the present embodiment of the invention, for adjusting the film supports simultaneously Q; .It is a still further objector the invention to provide means for manually operating the adjusting means from a location externally of the tank; and furthermore, itis an object of the invention to provide a cover and guides associated therewith, whereby the film delivered to the tank may be directed to the entrance of the coils or film holder.

With the foregoing and other objects in View, the invention consists in the details of construction, and in the arrangement and combination of parts to, be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings form- '3, 1 1'1 ing part of this application, wherein like characters denote corresponding parts in the several Figure 4 illustrates a sectional view on the line 44 of Figure 1; and

Figure 5 illustrates a detail View of a fragment of the rack.

In the present embodiment of the invention, 9 the tank 5 is of conventional type, having journal bearings 6 and 7 for a roller 8 which coasts with other parts of developing apparatus which need not be described or shown for an understanding of the invention by one skilled in the art.

The tank is usually employed in conjunction with film moving means which draw film from an exposing chamber, and deliver it to the tank for development. Such arrangements are well known in the artqand are disclosed in several 79 of my patents. a

The coil-form film holder of the above identified patent is formed of a sheet of material, Whereas in the present invention, two film holders 9 and 10 are provided, each coiled in substantially the manner of the film holder of the said patent, it being intended that the film shall be pushed into the tank and engage the holders and in moving follow the volutions of the coils.

The tank is provided with a longitudinally dis- 8o posed bar 11 which guides and supports sleeves 12 and 13 from which the coils 9 and 10 are respectively suspended.

The sleeve 12 has a bracket 14 to which a rack bar 15 is attached, and the sleeve 13 has a bracket 16 to which a rack bar 17 is attached, and it is shown that the said rack bars extend in opposite directions with relation to each other from their respective brackets and they are in spaced relation to each other. A pinion 18 is rotatably mounted on a stud 19 anchored to the bar 11, and the said pinion engages the rack bars.

The rack bars 15 and 17 are held in engagement with the pinion by rollers 20 and 21, respectively, rotatable on studs such as 22 supported by a bracket 23 attached to the bar 11.

The end of the rack bar 15 has a threaded aperture 24 to which the threaded end of a rod 25 may be applied or removed, the rod 25 constituting a manually operated element which is, slidable through an aperture in the end wall of the tank for reciprocating the rack bar 15 and through the pinion, the rack bar17. The rack bars being carried by the brackets of their respective sleeves, the said sleeves are adjusted longitudinally of the bar 11 and hence the film holders 9 and 10 may be moved for the purpose stated.

The rod 25 may be used to effect the adjustments mentioned and thereafter removed in order members respectively. 3. In a film treating apparatus, a receptacle,

that it will not interfere with the placing or removal of the tank.

The guide plates 26 and 2'? are adjustable on the bar 11 with respect to the ends of the tank and they are supported by sleeves such as'28 which are slidable on the said bar 11, the said sleeves being held at different positions of adjustment by set screws 29 in the sleeves and which engage the bar. p

A cover 30 is hinged as at 31 to the tank and it is provided with guiding fins or plates 32 located near the inner edge of the said cover, it being understood that there is a space between the in'-" nor edge of the cover and the wall of thetank, which constitutes a space for the passage of film into the tank, and it is also shown thatthe outer free ends of the film holders are in such proximity to the wall of the tank as to insure that the film shall enter the volutions of the coils as they are the Wall of the tank or a rib 35 on the inner Wall of the tank which the said bracket may abut. The bracket serves to brace the parts and hold them in operative position and also actsjas a guide for the film as it is delivered to the receptacle.

The bar 11 is held in the tank by reason of its engagement with supports 36 on the ends of the tank, each of which has a notch 37 in which the bar is seated.

I claim: 4

1. In a film treating apparatus, a receptacle, coil film support, means for suspending the supports in the receptacle, and means for adjusting the supports longitudinally of the receptacle.

2. In a film treating apparatus, ajrecfep-tacle, coil form supports, means for suspending the supports in the receptacle including a stationary element, members slidable on the said element, and means for connecting the supports to the coil form supports, means vfor'suspending the supports in the receptacle including a stationary element, members slidable on the said element,

meansfor connecting the supports to the mom-'- 55 1 v bers respectively, and means for adjusting the said members longitudinally of the receptacle.

4. In a film treating apparatus, a receptacle, coil form supports, means for suspending the supports in the receptacle including a stationary element, members slidable on the said element, and means for connecting the supports to the members respectively; a rack bar attached to each member, the racks of which are opposed, and a member engaging the racks for communicating the motion of one rack to the other rack. I

- 5. In a film treating apparatus, a receptacle, 'coil form supports, means for suspending the supports in the receptacle including a stationary element, members slidable on the said element,

and means for connecting the supports to the members respectively; a rack bar attached to each member, a rod connected to one of the said rack bars and movable with relation to the receptacle for manipulating said rack bar, and means for communicating the motion of the said rack bar to the other rack bar.

6. In a film treating apparatus, a receptacle, coll form supports, means for suspending the supports in the receptacle includinga stationary element, members slidable on the said element, and means foroonnecting the supports to the members respectively; means'for adjusting the said members, and means for moving the membe]; in unison longitudinally of the receptacle.

12in a film treating apparatus, a receptacle, coil film supports, means for suspending the supports inthe receptacle, and'guiding members adjustably supported in the receptacle at" the sides of the supports. 7

.8. ll'lfllfillll treating apparatus, a receptacle, coil formsupports, means for suspending the supports in the receptacle including a stationary element, guiding members adjustably supported on the element members slidable on the said elementjmeans for connecting the supports to the last mentioned members respectively, and means for adjusting the last mentioned members longitudinally of the receptacle.

9. ,In a film treating apparatus, a receptacle, coil form supports, means for suspending the supports in the receptacle including a stationary element, members slidable on the said element, and means for connecting the supports to the members'respectively; means ior adjusting the said members, and means for moving the members simultaneously in opposite directions longitudinally of the receptacle. 0

- GEORGE C. BEIDLER. 

